ITPS Startup Shutdown Controller Not Working
I bought the ITPS from MP3Car.com a couple months ago to use solely as a startup/shutdown controller cannot get that to even work properly. The problem I am having is that the ITPS will turn on my computer when ignition is applied. I tested this in the car and on the bench. I connected an oscilloscope to see PWR_ON output (connects to motherboard power jumper) of the ITPS. As you can see from the capture the turn on pulse is only 344nS which is way to short for the motherboard to detect. Has anyone else had similar problems with their ITPS?
Ch1: Input Voltage to ITPS
CH2: ITPS Pwr_On Output 1
CH3: ITPS Pwr_On Output 2
Ch4: ITPS Ignition input